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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_PUBLIC_PLATFORM_WEB_TOUCH_EVENT_H_
#define THIRD_PARTY_BLINK_PUBLIC_PLATFORM_WEB_TOUCH_EVENT_H_
#include "third_party/blink/public/platform/web_input_event.h"
namespace blink {
// See WebInputEvent.h for details why this pack is here.
#pragma pack(push, 4)
// WebTouchEvent --------------------------------------------------------------
// TODO(e_hakkinen): Replace with WebPointerEvent. crbug.com/508283
class WebTouchEvent : public WebInputEvent {
public:
// Maximum number of simultaneous touches supported on
// Ash/Aura.
enum { kTouchesLengthCap = 16 };
unsigned touches_length;
// List of all touches, regardless of state.
WebTouchPoint touches[kTouchesLengthCap];
// Whether the event is blocking, non-blocking, all event
// listeners were passive or was forced to be non-blocking.
DispatchType dispatch_type;
// For a single touch, this is true after the touch-point has moved beyond
// the platform slop region. For a multitouch, this is true after any
// touch-point has moved (by whatever amount).
bool moved_beyond_slop_region;
// True for events from devices like some pens that support hovering
// over digitizer and the events are sent while the device was hovering.
bool hovering;
// Whether this touch event is a touchstart or a first touchmove event per
// scroll.
bool touch_start_or_first_touch_move;
// A unique identifier for the touch event. Valid ids start at one and
// increase monotonically. Zero means an unknown id.
uint32_t unique_touch_event_id;
WebTouchEvent()
: WebInputEvent(sizeof(WebTouchEvent)), dispatch_type(kBlocking) {}
WebTouchEvent(Type type, int modifiers, base::TimeTicks time_stamp)
: WebInputEvent(sizeof(WebTouchEvent), type, modifiers, time_stamp),
dispatch_type(kBlocking) {}
#if INSIDE_BLINK
// Sets any scaled values to be their computed values and sets |frame_scale_|
// back to 1 and |frame_translate_| X and Y coordinates back to 0.
BLINK_PLATFORM_EXPORT WebTouchEvent FlattenTransform() const;
// Return a scaled WebTouchPoint in root frame coordinates.
BLINK_PLATFORM_EXPORT WebTouchPoint
TouchPointInRootFrame(unsigned touch_point) const;
bool IsCancelable() const { return dispatch_type == kBlocking; }
#endif
};
#pragma pack(pop)
} // namespace blink
#endif // THIRD_PARTY_BLINK_PUBLIC_PLATFORM_WEB_TOUCH_EVENT_H_
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